import router from './router'
import store from './store'
import { Message } from 'element-ui'
import NProgress from 'nprogress'
import 'nprogress/nprogress.css'
import { getToken } from '@/utils/auth'
import { isRelogin } from '@/utils/request'

NProgress.configure({ showSpinner: false })

const whiteList = ['/login', '/auth-redirect', '/bind', '/register']
/**
 * 
 * NProgress 页面加载的虚假进度条
 * 
 * localhost:8087/ 访问路由跳转
 * permission, to:/index   router.js中path为''的配置
 * permission.js:49 permission, to.fullPath:/index  permission.js判断登录,没有   next(`/login?redirect=${to.fullPath}`) 
 * permission.js:14 permission, to:/login  接上一步，走登录/login?redirect=index
 * 怎么这里直接 to /404 了 ?  this.$router.push()编程式导航代码不对，直接去404了。
 * */
router.beforeEach((to, from, next) => {
  console.log("permission, to:" + to.path)
  NProgress.start()
  if (getToken()) {
    to.meta.title && store.dispatch('settings/setTitle', to.meta.title)
    /* has token*/
    if (to.path === '/login') {
      next({ path: '/' })
      NProgress.done()
    } else {
      if (store.getters.roles.length === 0) {
        isRelogin.show = true
        // 判断当前用户是否已拉取完user_info信息, user.js中的GetInfo 方法
        store.dispatch('GetInfo').then(() => {
          isRelogin.show = false

          // 生成路由,从后台接口获取路由信息
          store.dispatch('GenerateRoutes').then(accessRoutes => {
            // 根据roles权限生成可访问的路由表
            router.addRoutes(accessRoutes) // 动态添加可访问路由表
            next({ ...to, replace: true }) // hack方法 确保addRoutes已完成
          })
        }).catch(err => {
          store.dispatch('LogOut').then(() => {
            Message.error(err)
            next({ path: '/' })
          })
        })
      } else {
        next()
      }
    }
  } else {
    // 没有token 
    if (whiteList.indexOf(to.path) !== -1) {
      // 在免登录白名单，直接进入 
      next()
    } else {
      console.log("permission, to.fullPath:" + to.fullPath)
      next(`/login?redirect=${to.fullPath}`) // 否则全部重定向到登录页
      NProgress.done()
    }
  }
})

router.afterEach(() => {
  NProgress.done()
})
